Activities
The tour boats in the harbor across from the Welcome Hotel do a nice loop to Nice and back. You buy your tickets in the Gare Maritime (the orange building across from the Welcome).
Chapelle St-Pierre (St. Peter of the Fishers) was built in the 1500s for sailors to pray before sailing. After a fire, it was used by fishermen to store their materials and discuss their problems. In 1956-57, the interior was painted by famous French painter Jean Cocteau. Today you can visit its beautiful interior for a small fee. (It was also featured in a scene in the TV show "Emily in Paris," season 2, episode 2.
The Citadelle is a historic fortress that was built in 1557. Today it is a government and cultural center, home to the town hall, a museum, an open-air movie and concert theater, and special events. It is free, other than the special exhibits, and offers guided tours. Check website for hours.
There are many hiking trails in the area. A very popular hike is the St-Jean-Cap-Ferrat Loop.
For adventurous types, there are also opportunities for scuba diving excursions and/or to rent boats or paddle boards.
https://www.glisse-evasion.com/en/
https://www.randeauevasion.com/english-website/